西铂莱恩 |
2011-09-16 14:20 |
glass selection
Glass selection tends to be both a science and an art. It is the intent of this paper to remove the A4%0 "mystique" surrounding glass selection, primarily based on the chromatic properties of the glass, -PEpy3dMY and to show via careful parametric analyses how we can optimally select glasses for lenses of PuUqWW'^ different f/numbers, spectral bands, and performance requirements. The important roles of iCc@N|~ refractive index and Abbe number as well as partial dispersion will be considered. Using the <aL$d7 SCHOTT glass map, six separate and identifiable regions along with glasses within each region K< | |